(5 mins) Transcript. Dr Greger's summary: "Even at low-level exposure, arsenic is not just a class I carcinogen, but may also impair our immune function and increase our risk of cardiovascular disease and diabetes."

(4 mins) Transcript. Dr Greger's summary: "The levels of arsenic, banned pesticides, and dioxins exceeded cancer benchmarks in each of the 364 children tested. Which foods were the primary sources of toxic pollutants for preschoolers and their parents?"

(1 min) Transcript. Dr Greger's summary: "Blood arsenic levels may be an accurate indicator of seafood intake."